Genus Malus is a botanical term referring to a group of flowering plants belonging to the rose family, Rosaceae. These plants are commonly known as apples. However, there are several other synonyms for Genus Malus, including Pyrus malus, Malus communis, Malus pumila, and Malus sylvestris. Pyrus malus is a term used mostly in Europe to refer to the apple species, while Malus communis is a name used in scientific literature. Malus pumila is an older classification and is not used much today. Malus sylvestris is a wild apple tree species found in Europe. These different synonyms all refer to the same group of plants commonly known as apples.